1 /*******************************************************************************
2 Copyright (c) 2017, Michael Wallner <mike@php.net>.
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions are met:
8 * Redistributions of source code must retain the above copyright notice,
9 this list of conditions and the following disclaimer.
10 * Redistributions in binary form must reproduce the above copyright
11 notice, this list of conditions and the following disclaimer in the
12 documentation and/or other materials provided with the distribution.
14 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
15 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
18 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
20 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
21 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
22 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *******************************************************************************/
26 #include "php_psi_stdinc.h"
33 #include <Zend/zend_smart_str.h>
37 struct psi_decl_extvar
*psi_decl_extvar_init(struct psi_decl_arg
*arg
)
39 struct psi_decl_extvar
*evar
= calloc(1, sizeof(*evar
));
45 void psi_decl_extvar_free(struct psi_decl_extvar
**evar_ptr
)
48 struct psi_decl_extvar
*evar
= *evar_ptr
;
51 psi_token_free(&evar
->token
);
52 psi_decl_arg_free(&evar
->arg
);
53 psi_decl_free(&evar
->getter
);
54 psi_decl_free(&evar
->setter
);
59 bool psi_decl_extvar_validate(struct psi_data
*data
,
60 struct psi_decl_extvar
*evar
, struct psi_validate_scope
*scope
)
62 if (!psi_decl_arg_validate(data
, evar
->arg
, scope
)) {
66 evar
->size
= psi_decl_arg_get_size(evar
->arg
);
68 data
->error(data
, evar
->arg
->var
->token
, PSI_WARNING
,
69 "Failed to calculate size of symbol '%s'", evar
->arg
->var
->name
->val
);
77 while (!evar
->sym
&& psi_plist_get(data
->file
.dlopened
, i
++, &dl
)) {
78 evar
->sym
= dlsym(dl
, evar
->arg
->var
->name
->val
);
83 # define RTLD_NEXT ((void *) -1l)
86 # define RTLD_DEFAULT ((void *) 0)
88 evar
->sym
= dlsym(RTLD_DEFAULT
, evar
->arg
->var
->name
->val
);
90 data
->error(data
, evar
->arg
->var
->token
, PSI_WARNING
,
91 "Failed to locate symbol '%s': %s", evar
->arg
->var
->name
->val
,
92 dlerror() ?: "not found");
97 evar
->getter
= psi_decl_extvar_getter(evar
);
98 if (!psi_decl_validate_nodl(data
, evar
->getter
, scope
)) {
101 evar
->setter
= psi_decl_extvar_setter(evar
);
102 if (!psi_decl_validate_nodl(data
, evar
->setter
, scope
)) {
109 void psi_decl_extvar_dump(int fd
, struct psi_decl_extvar
*evar
)
111 dprintf(fd
, "extern ");
112 psi_decl_arg_dump(fd
, evar
->arg
, 0);
116 struct psi_decl
*psi_decl_extvar_setter(struct psi_decl_extvar
*evar
)
118 zend_string
*type_str
= zend_string_init(ZEND_STRS("void"), 1);
119 struct psi_decl_type
*func_type
= psi_decl_type_init(PSI_T_VOID
, type_str
);
120 struct psi_decl_var
*func_var
= psi_decl_var_copy(evar
->arg
->var
);
121 struct psi_decl_arg
*func
= psi_decl_arg_init(func_type
, func_var
);
122 struct psi_decl_type
*arg_type
= psi_decl_type_copy(evar
->arg
->type
);
123 struct psi_decl_var
*arg_var
= psi_decl_var_copy(evar
->arg
->var
);
124 struct psi_decl_arg
*arg
= psi_decl_arg_init(arg_type
, arg_var
);
125 struct psi_plist
*args
= psi_plist_init((psi_plist_dtor
) psi_decl_arg_free
);
126 struct psi_decl
*decl
= psi_decl_init(func
, psi_plist_add(args
, &arg
));
127 smart_str name
= {0};
129 zend_string_release(type_str
);
131 func_var
->pointer_level
= 0;
132 func_var
->array_size
= 0;
134 smart_str_append_ex(&name
, func_var
->name
, 1);
135 smart_str_appendl_ex(&name
, ZEND_STRL("_set"), 1);
136 zend_string_release(func_var
->name
);
137 func_var
->name
= smart_str_extract(&name
);
144 void psi_decl_extvar_set(struct psi_decl_extvar
*evar
, void *ptr
)
146 memcpy(evar
->sym
, ptr
, evar
->size
);
149 struct psi_decl
*psi_decl_extvar_getter(struct psi_decl_extvar
*evar
)
151 struct psi_decl_type
*func_type
= psi_decl_type_copy(evar
->arg
->type
);
152 struct psi_decl_var
*func_var
= psi_decl_var_copy(evar
->arg
->var
);
153 struct psi_decl_arg
*func
= psi_decl_arg_init(func_type
, func_var
);
154 struct psi_decl
*decl
= psi_decl_init(func
, NULL
);
155 smart_str name
= {0};
157 smart_str_append_ex(&name
, func_var
->name
, 1);
158 smart_str_appendl_ex(&name
, ZEND_STRL("_get"), 1);
159 zend_string_release(func_var
->name
);
160 func_var
->name
= smart_str_extract(&name
);
167 void psi_decl_extvar_get(struct psi_decl_extvar
*evar
, void *ptr
)
169 memcpy(ptr
, evar
->sym
, evar
->size
);
173 bool psi_decl_extvar_is_blacklisted(const char *name
)
178 while (psi_plist_get(PSI_G(blacklist
).vars
, i
++, &blacklisted
)) {
179 if (!fnmatch(blacklisted
, name
, 0)) {